I have not been using included shaders for anything for years because of problems. Even before Superfly I'd see crazy node setups that did not make any sense and now that I'm rendering using a GPU that craziness just equates to an OPTIX crash or something rendering total black. It's one of the reasons I really hate buying/using large scene props from the marketplace. None of the mats are optimized for Superfly or worse, they generate a crash.

When I do use something I have to replace EVERY material with my own. Here is anexample

W10, Ryzen 5 1600x, 16Gb,RTX2060Super+GTX980, PP11, 11.3.740